Jeep 401 Specs
Jeep 401 engine specs: 401 ci (6.6L), 8-cylinder, 4.3701" bore x 3.4094" stroke, 8.25:1 compression.
Dimensions
| Displacement | 401 ci / 6.6 L |
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| Bore | 4.3701" |
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| Stroke | 3.4094" |
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| Cylinders | 8 |
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| Compression ratio | 8.25:1 |
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| Bore/stroke ratio | 1.282 |
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Construction
| Block material | cast iron |
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| Head material | cast iron |
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| Valvetrain | OHV |
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| Fuel type | gas |
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| Advertised HP | 215 hp |
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What these numbers mean
| Bore/stroke character | 1.282 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
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| Mean piston speed at 6,000 RPM | 3,409 ft/min — conservative for a street engine |
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| Displacement per cylinder | 50.1 ci |
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| Static compression | 8.25:1 — low by modern standards, generally happy on regular pump fuel |
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Vehicles (13)
- Jeep Cherokee (SJ)
- Jeep Wagoneer (SJ)
- Jeep J-Series
- Jeep J-Series Truck
- Jeep Cherokee SJ
- Jeep Wagoneer SJ
- Cherokee S
- Cherokee SJ
- J-10
- J-20 Pickup
- J-20 Truck
- Jeep Wagoneer
- Wagoneer
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